AIRBAG SYSTEM(w/ Curtain Shield Airbag), Diagnostic DTC:B1692/81, B1693/81

DTC Code DTC Name
B1692/81 Lost Communication with Door Side Airbag Sensor RH
B1693/81 Door Side Airbag Sensor RH Initialization Incomplete

DESCRIPTION

The circuit for the side collision sensor RH (to determine deployment of the front seat side airbag RH and curtain shield airbag RH) is composed of the airbag sensor assembly, door side airbag sensor RH and No. 2 side airbag sensor assembly RH.

The door side airbag sensor RH and No. 2 side airbag sensor assembly RH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbag should be deployed.

DTC B1692/81 and B1693/81 are recorded when a malfunction is detected in the circuit for the side collision sensor RH (to determine deployment of the front seat side airbag RH and curtain shield airbag RH).

DTC No. DTC Detection Condition Trouble Area

B1692/81

B1693/81

When one of following conditions is met:


  • The airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the circuit for the side collision sensor RH (to determine deployment of the front seat side airbag RH and curtain shield airbag RH) for 2 seconds.

  • Door side airbag sensor RH malfunction

  • No. 2 side airbag sensor assembly RH malfunction

  • Airbag sensor assembly malfunction

  • Floor wire

  • Front door wire RH

  • Door side airbag sensor RH

  • No. 2 side airbag sensor assembly RH

  • Airbag sensor assembly

WIRING DIAGRAM

A01VGTOE21
*a No. 2 Side Airbag Sensor Assembly RH
*b Door Side Airbag Sensor RH
*c Airbag Sensor Assembly

PROCEDURE


  1. CHECK CONNECTORS


    1. Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Check that the connectors are properly connected to the airbag sensor assembly, door side airbag sensor RH and No. 2 side airbag sensor assembly RH.

      OK
      The connectors are properly connected

      Tech Tips

      If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the airbag sensor assembly, door side airbag sensor RH and No. 2 side airbag sensor assembly RH.

    5. Check that the terminals of connectors are not damaged.

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  2. CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (OPEN)


    1. Using a service wire, connect terminals 2 (BDR+) and 1 (BDR-) of connector E.

      A01VFHEE02
      Text in Illustration
      *1 Door Side Airbag Sensor RH *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH *4 Floor Wire
      *5 Connector B *6 Connector E
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

      		 *b

      Front view of wire harness connector

      (to Door Side Airbag Sensor RH)

      Note

      Do not forcibly insert the service wire into the terminals of the connector when connecting.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K46-1 (BDR+) - K46-2 (BDR-) Always Below 1 Ω

    NG

    CHECK FRONT DOOR WIRE RH (OPEN) Click here

    OK

  3. CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT)


    1. A01VFBUE02
      Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

      Disconnect the service wire from connector E.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K46-1 (BDR+) - K46-2 (BDR-) Always 1 MΩ or higher

    NG

    CHECK FRONT DOOR WIRE RH (SHORT) Click here

    OK

  4. CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT TO B+)


    1. A01VFBUE02
      Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

      Connect the cable to the negative (-) battery terminal.

    2. Turn the ignition switch to ON.

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K46-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      K46-2 (BDR-) - Body ground Ignition switch ON Below 1 V

    NG

    CHECK FRONT DOOR WIRE RH (SHORT TO B+) Click here

    OK

  5. CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT TO GROUND)


    1. A01VFBUE02
      Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

      Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K46-1 (BDR+) - Body ground Always 1 MΩ or higher
      K46-2 (BDR-) - Body ground Always 1 MΩ or higher

    NG

    CHECK FRONT DOOR WIRE RH (SHORT TO GROUND) Click here

    OK

  6. CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    1. A01VDPCE01
      Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly

      Connect the connectors to the No. 2 side airbag sensor assembly RH and airbag sensor assembly.

    2. Interchange the No. 2 side airbag sensor assembly RH with the No. 2 side airbag sensor assembly LH and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal.

    4. Turn the ignition switch to ON, and wait for at least 60 seconds.

    5. Clear the DTCs stored in the memory Click here.

    6. Turn the ignition switch off.

    7. Turn the ignition switch to ON, and wait for at least 60 seconds.

    8. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1692/81 or B1693/81 is output. A
      DTC B1697/82 or B1698/82 is output. B
      DTC B1692/81, B1693/81, B1697/82 and B1698/82 are not output. C

      Tech Tips

      Codes other than DTCs B1692/81, B1693/81, B1697/82 and B1698/82 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.

    10. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    11. Return the No. 2 side airbag sensor assembly RH and the No. 2 side airbag sensor assembly LH to their original positions and connect the connectors to them.


    B

    REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  7. CHECK DOOR SIDE AIRBAG SENSOR RH


    1. A01VFE5E16
      Text in Illustration
      *1 Door Side Airbag Sensor LH
      *2 No. 2 Side Airbag Sensor Assembly RH

      Interchange the door side airbag sensor RH with the door side airbag sensor LH and connect the connectors to them.

    2. Connect the cable to the negative (-) battery terminal.

    3. Turn the ignition switch to ON, and wait for at least 60 seconds.

    4. Clear the DTCs stored in the memory Click here.

    5. Turn the ignition switch off.

    6. Turn the ignition switch to ON, and wait for at least 60 seconds.

    7. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1692/81, B1693/81, B1697/82 and B1698/82 are not output. A
      DTC B1692/81 or B1693/81 is output. B
      DTC B1697/82 or B1698/82 is output. C

      Tech Tips

      Codes other than DTCs B1692/81, B1693/81, B1697/82 and B1698/82 may be output at this time, but they are not related to this check.

    8. Turn the ignition switch off.

    9. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    10. Return the door side airbag sensor LH and the door side airbag sensor RH to their original positions and connect the connectors to them.


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    C

    REPLACE DOOR SIDE AIRBAG SENSOR RH Click here

  8. CHECK FRONT DOOR WIRE RH (OPEN)


    1. Disconnect the floor wire connector from the front door wire RH.

      A01VF1AE02
      Text in Illustration
      *1 Door Side Airbag Sensor RH *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH *4 Floor Wire
      *5 Connector D *6 Connector E
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Floor Wire)

      		 *b

      Front view of wire harness connector

      (to Door Side Airbag Sensor RH)

      Tech Tips

      The service wire has already been inserted into connector E.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      GK2-1 (BDR+) - GK2-2 (BDR-) Always Below 1 Ω

    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE RH

  9. CHECK FRONT DOOR WIRE RH (SHORT)


    1. A01VFY0E01
      Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector D
      *a

      Front view of wire harness connector

      (to Floor Wire)

      Disconnect the floor wire connector from the front door wire RH.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      GK2-1 (BDR+) - GK2-2 (BDR-) Always 1 MΩ or higher

    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE RH

  10. CHECK FRONT DOOR WIRE RH (SHORT TO B+)


    1. A01VFY0E01
      Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector D
      *a

      Front view of wire harness connector

      (to Floor Wire)

      Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Disconnect the front door wire RH connector from the floor wire.

    4. Connect the cable to the negative (-) battery terminal.

    5. Turn the ignition switch to ON.

    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      GK2-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      GK2-2 (BDR-) - Body ground Ignition switch ON Below 1 V

    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE RH

  11. CHECK FRONT DOOR WIRE RH (SHORT TO GROUND)


    1. A01VFY0E01
      Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector D
      *a

      Front view of wire harness connector

      (to Floor Wire)

      Disconnect the front door wire RH connector from the floor wire.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      GK2-1 (BDR+) - Body ground Always 1 MΩ or higher
      GK2-2 (BDR-) - Body ground Always 1 MΩ or higher

    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE RH